270052 OsCommerce Speed Issues and cu

I am looking for the best and Fastest OsCommerce Programmer, in particularly good at locating coding problems causing speed issues. I have a VERY CUSTOMIZED OsCommerce site that is on a Good dedicated server by itself with minimal traffic, yet runs like crap. I want a regular go to programmer that I can contact regarding a job and have it taken care of FAST. I need jobs completed in a day or 2 usually not a week or so. I want someone that can take care of urgent problems immediately. I do not want delays for days due to time zone differences you only being available while I am asleep in the US. I work on a job by job payment method, but do have jobs available. If you get complaints of being slow, or programming mistakes on live sites, please do not even apply. If you are to busy already or if you are only doing this a couple hours a day for extra money, please do not apply either. The First and Foremost issue I have know is the speed of my website, so if you are not familiar with tracking down coding problems, then do not apply. I can also tell you that it is not the images, because it used to run much faster on a slower server with the same images.